package com.rem.concurrency.multithreading.base;

import lombok.SneakyThrows;

/**
 * 龟兔赛跑
 *
 * @author Rem
 * @date 2021-03-03
 */

public class Race implements Runnable {

    //胜利者
    private static String winner;

    @SneakyThrows
    @Override
    public void run() {
        for (int i = 1; i <= 100; i++) {
            //模拟兔子休息
            if ("兔子".equals(Thread.currentThread().getName()) && i % 10 == 0) {
                Thread.sleep(10);
            }
            //判断比赛是否结束
            boolean flag = gameOver(i);
            //如果比赛结束 停止程序
            if (flag) {
                break;
            }
            System.out.println(Thread.currentThread().getName() + "跑了" + i + "步");
        }
    }

    //判断是否完成比赛
    private boolean gameOver(int steps) {
        //判断是否有胜利者
        if (winner != null) {//已经存在胜利者了
            return true;
        }
        {
            if (steps >= 100) {
                winner = Thread.currentThread().getName();
                System.out.println("winner is" + winner);
                return false;
            }
        }
        return false;
    }

    public static void main(String[] args) {
        Race race = new Race();
        new Thread(race, "乌龟").start();
        new Thread(race, "兔子").start();
    }
}
